3,5-Dinitrophthalic acid CAS 4277-02-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 4277-02-5 |
| Molecular Formula | C8H4N2O8 |
| Molecular Weight | 256.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3,5-Dinitrophthalic acid (CAS 4277-02-5) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C8H4N2O8. Molecular weight: 256.13 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C8H4N2O8 |
| Molecular Weight | 256.13 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Nitrogen Atoms | 2 |
Recommended Standards
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- 1-Oxo-1-phenylpropan-2-yl 6-bromo-2-(4-chlorophenyl)quinoline-4-carboxylate (CAS 355421-54-4)
- 3-Amino-2,5-dihydro-1,2,4-triazin-5-one (CAS 1121-90-0)
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- 5-Bromo-6-iodoquinoxaline (CAS 1865584-97-9)
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- 1-{5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl}piperazine dihydrochloride (CAS 1221726-01-7)
- Semaglutide impurity 200 (CAS CATO-C4X-2226200)
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